<?php

namespace backend\services;

use backend\models\AdminRole;

class AdminRoleService extends AdminRole
{

    protected static $_instance = null;

    /**
    *@功能:角色初始化
    *@author 梁波
    *@日期时间:2017/10/6
    */
    public function role_add($user_id)
    {

    }
    /**
     * @return
     */
    public static function getInstance()
    {
        if (self::$_instance === null) {
            self::$_instance = new self();
        }
        return self::$_instance;
    }

}
